Clamp for concrete forms



April'5, 1932." H. w. R008 1,852,823

' CLAMP FOR CONCRETE FORMS Fild March 25, 1927 gsheets-Sheet 1 INVENTOR.

173703 WZZ OS Apfil 5, 1932. H, w, RQQS 1,852,823

' CLAMP FOR CONCRETE FORMS Filed March 25, 192'. 2 Sheets-Sheet 2' IH-IHIIIII Z4 INVENTOR. [$2727 M2005 155A TTORNEY Patented Apr; 5, 1932 i RATE-NI oFFicE k r HENRY w, Bees, 01* emcmnnrr, omo

CLAMP, non co me se s,

' Application; filed llarch 25, 192?. Serial No; 178326. 1;

(This invention relates to a, clamp especially adapted for use in ;connection--with moldsorforms for concrete or other similar construction, and has for its principalziobject to afford asimple and practica-lconstruction whichlends itself readilytoquick applicar tion and convenient portability.

The invention is especially applicable.

holding planks or forms in placefor mold' is ing a column ofpolygonal fornrp Clamps for use in this CODHGCtlQIIZEtIBWlSIlZIllY 'con;- structed of two clamping barshingedtogether at oneend and overlapped and crossed at the corners of the column with other bars; I?) An angle piece is usuallyzemployed at the corners for holding the clamping bars in.

- proper position andfor 'adj ustingithem rela} tively to the form, a

' The'present invention relatesiespecially to an improved form of angle pieceand has'for v stOOcliby Iii] - I 7 piece;

(being shown in cross-section; b

Figure 21s'a sldevlew ofthe same; i a Figure 3 1s t'PGISPGCtlVBVlBW of the angle Figure is a plan View of theangle piece;

[Fi ure 5 lS a, section through the angle a L piece andclamping bars taken on the line 525 of Figure 1;, a

Figure 6 is an elevation of oneendof the r fina e P U thereof; and

' trating a ventiomr Figure 7 is an elevation of the" other end W Fig. 8 is; a

slightly modified form' of: the in- Like reference numerals are used foricorview of the clamp in use upon a'rectangularcolumn," the column,

view'similar tojFig. ill'us-' respo g parts throu hout t i varidu's gures; a

- Referring now toFigure l, the numeral 10: designates generally 3 a rectangular 1 column form, the side's-of whi'chrare composed of 5 planksll; Arranged aroundthe outside of I,

these plankskand holding; themin place is a,

clamp comprising two arms 12 and 13pivot ally connected near one end at 14, and two 1 similar arms 15 and 16 pivoted to each other at 317 ",Thesefl arms are of proper length for useoin connectionwith various-sizes of coli umns, being slightly longer than "the diamv eter of thelargest column with which they are'to'be zusediy. Wherethe free ends of the clampingbars cross'each' other, .they are connected together by angle pieces designatedgenerally at ;l 8, these angle: pieces j being identical with each 4 other in r all respects; 7 'ASfWlll -Tb 'bestseenp i'rom Figures 3 to 7 each angle piece comprises walls-19 and '20 forming upper and lower walls of a passage way 21, these walls being connected by a vertical M1122, Extendingat an angle to I the wallsofrthis passageway, are walls'23 and 24 which together with a rear wall25 forma passageway '26. It will be noted that the passageway 21 is in the nature of a channel,

being entirely open at onefside. The other passageway 26 .isof channel formation throughout part of its length, as is" plainly shown inFigure 3, but hasa wall 27 partially r closing the open side of the passage, thus making this portion of the passage of tubular form. Since the clamping bars which pass r through the passageways 21 and 26 lie one on to 'of another where they "cross, it is obvious that the p assages fo'r them must be in differ:

ent planes.-- Preferably the top ofthe passage I l V 21 is in approximately the same plane as the bottom of the passage 26. The two passages therefore open into a common passage or chamber 28 at the point wherethey cross eachother. The {upper and lower walls of this common passage are cut-away at 29, as shown tive bars, and thus hold the bars more rigidly and firmly than if they were held only at their intersection.

With an integral angle piece of this type, it is essentialthat proper strengthening and stiffening means he provided so as: to give great rigidity, since otherwise the two arms. of the angle piece are apt to bend, which would throw the clamping bars out of proper alinement. To overcome this d-iflicnlty, I ems ploy a stiffening member, preferably in the' form of a web 30 connecting the/aside. walls: 22 and 25 of the passageways 21 and26. The

web 30', as: will be seen fromFigure 4?, extends approximately the full length of each otthese walls and fills the angle between them. Prefembl y the web is connected to the walls- 22 and 25 approximately midway of the depth of each of these walls, and as thesewa'lls are slightly offset fromveach other, as is seen in Figures 6 and 7 it follows that the web must be" somewhat oblique or skewed-, as is shown thesefigures. The web may therefore be said to connect the central plane of one passagew'ay with the central planeof the other. If desired, however, it could be constructed flat as shown in Fig. 8 rather than'skewed, but in this case'the web 30 would necessarily be'connectedtothe walls 22 and 25'nearthe of one wal'l and near the bottom ofthe other. The, web 30 connects the walls 22 and 25and 'is arranged substantially between the passageways 21 and 26 and in a plane substantially-parallel therewith. Y

Itwill beobvi o'us from the structureso far described that the angle piece in use completely encircles one of the clamping bars,

such as 15,"and receives the other clamping bar, such as 13 in the open channel. The object of encircling one of the bars is so that the angle piece will always be attached thereto and will not become lost or mi'sl'aid. To

prevent" the angle piece from sliding oil" the longitudinal slots 32 formed'therein, and the upper'and 'lowerwalls of the two portions of theangle piece have corresponding slots 33. The spacing of the slotsin the angle piece is different from that of the slots in the clampclamping bars lengthwise through the passageways of the angle piece, thus tightening clamp in a manner well known in the art.

- Itshould be borne in mind that clamps of this nature are portable articles intended for use atone place only for a limited time. They are constantly being moved around from point to. point, in one construction job, and from one job'to another. Under such conditions, small parts are very apt to become lost in handling. For this reason it is desirable tov connect small: loose parts together so that all the parts of a complete. device will be at hand when it is: desired to use it- The wedges 34% are therefore attached to flexible members such as the chains- 35, though it is obvious that: cords or ropes or any similar members could'be used. The other ends of the chains 35 are attached to. holes 36 formed ne arthe. endsof the web 30. V v

-Itrwill now'be. seen that I have disclosed asimplieand efficient clamp which is at the same time strongand durable. Each clamp comprises two pairs of clamping bars and the angle pieceand wedges attached thereto.

All of the parts are connected together, the

angle piece being prevented from sliding off the clamping bar by the stop 31 and the wedges being secured to the angle piece by the. chains 35. When two pairs of these clamping bars and their connected parts are at hand, all the parts necessary for one completeiclamp are immediately available and itiis. not necessary to spend time hunting for lost wedges, loose angle pieces, etc.

" It-willbe seen that Iprovidethe stifi'eningweb 30'for a double purpose. It not only strengthens'the angle piece, makingthe' two armsthereof more rigid and less liable tobe broken, but it also forms a means for attaching the locking devices or "wedges 34 to the angle piece at the most convenientpoints.

While I have described a particular embodiment of my invention, it should be understood that obvious changes and modifications can be made without departing from the spirit or scope thereof, and I do not desire to be limited to the precise details set forth.

This application is intended to cover such equivalents or departuresas may come within the underlying purposes of the invention or the scope of the following claims.

I I claim: 7

- 1. A clampcomprising two members cross- Q ing each other at an angle, both of said members having longitudinal slots therein, and

7 said channel portion and of said tubular por-- .tion, said slots being formed and arranged to permit a continuous clamping action Qeachofzthe crossed'membersfor a substantialthe angle piece along said'members;

2.- A clamp comprising two members CI'OSS", ingeach other at an angle, and an angle piece for connecting said two members where they cross, said, "angle piece comprising walls forming passageways, one extending along distance between the crossing point and the free endof said member and adapted to receivethe member within it, the bottom of one,

passageway being in substantially the same plane'as the top of the other passageway,

e to-Teachnother and acting to .embrace said spaced, parallel walls connecting the inner ends'of thep'assageways and an oblique stilt ening member extending fromla side wall of one passagewayto the adjacent side wall of the other passageway. 1

- 3; An: angle piece,

comprising walls forming two passageways in d fferent parallel planes and atan angle crossed i members between the crossing pointandthe free BIlClSzOf the members, and a a stiffening member more angle between said passageway with the, adjacent side wall of passageways, connecting one sidewall of one the other passageway 7 1 I lQAn' angle 1 piece for connecting two crossed membersof a clamp, saidangle piece comprising walls forming two passageways in difierent parallel planes and at an angle to each other and acting to embrace said crossed members between the crossing point and the free endsofthe members, and a Sbll'l f ening member the: angle between said passageways, connecting: one side wall of one passageway, with the adjacent side wall of the' other passageway, said stiffening member extending obliquely from the plane oi one passageway tothe plane of the other ga s geway p a 7 v '5; An angle piece for connecting two crossed membersof a clamp, said angle piece comprising walls forming two passageways at an angle to each other and acting to'em-fl brace said crossed members between the ingpoint and the tree endsof the members, one passageway be ng open onone side for connecting two T crossed .membersof a clamp, said angle piece throughout its length, the other passageway V beingopenon one side for a portion of its length and closed on said side .for a portion of its length, the bottom of one passageway being insubstantially the same plane as the top of the otherpassageway, and anioblique stiffening web connecting the adjacentside walls of the two passageways; 6;An angle piece" for connecting two crossed members ofa clamp, said angle piece comprising walls forming two passageways extending indifferent directions and 1n (hi lerentplanes froma common point,said arr-- gle piecebeing cut away at the corner adapt r ed tobe'located in proximity to the clamped body, and a stifienmg member connecting one side wallof one passageway tothe ad acent side wall of the other passageway.

7. An anglepiece for connecting, two.

crossed members of a clamp, said angle'piece comprising walls forming two passageways extending in different directions and indifferent planes from a common point, said an- I gle piece being cut away at the corner adapted to be located in proximity to the clamped bodypa stifiening web connecting one side wall of one passageway to the adjacent side wall of the other passageway, and locking means Jforsaidangle piece, said web including means for attaching said locking means to said angle piece.

8. A. clamp comprising two members crossing each otl1er, an anglepiece having v walls forming passageways for receiving said f members, said passageways extending'along said members from the point where t ey cross toward the free ends of the members, a stifip I emng member in the angle between said pasj 1 sageways and connecting the side wallsof the V passageways, a locking device for locking said angle piece to one ofsaid'c-rossed members,

anda flexible zmember attached to said locking de'Vic-e, one end of said flexible member being attached to the stifiening member.

9. An angle piece comprising two bar embracing portions arranged at anangle to each other and positionable between; the crossing of'a pair of clamping bars and the free ends of such bars, one rot-said bar embracing portions havinga passageway open on onelside thronghout ts length and the other having a passageway open for a part of itslength V and closed for a part of its length, and a sti'li- 1 ening web integrally connecting the side walls of said bar embracing portions and occopying the angular space between them and the free ends of the clamping bars.

' 10. An angle piece compri ..ng-two bar embracingportionsarranged at, an angle to each other, one having a passageway open on one:

sidethroughout its length and the other havingla passageway open for a part of its length and ,closedior apart of its, length, said bar embracing portions extending fromithe. crossing point or" the bars toward the 'treeendsfofthe respective bars, and a stiffening web inoverlapped position comprising a pair of arms adapted to be associated with the bars respectively and extend outwardly from the overlapping parts toward the extremities of said ends of the bars, one of the arms having an elongated chamber formed therein in which the lowermost bar fits and is longitudinally slidable only, the other arm being provided with an elongated open-sided chamber in which the uppermost bar fits edgewise and is longitudinally slidable, said arms being provided with slots, and wedges extending through the slots in the arms and bars for holding the bracket and bars in their operative position.

12. In a clamp of the character described, the combination of a pair of bars, the ends of which overlap and are each provided with a longitudinal series of slots, a onepiece bracket for holding the ends of the bars in their overlapped position comprising a pair of arms adapted to be associated with the bars respectively and extend outwardly from the overlapping parts toward the extremities of said ends of the bars, one of the arms having an elongated chamber formed therein in which the lowermost bar fits and is longitudinally slidable, the other arm extending outwardly from the outer edge of said lowermost bar and being provided with an elongated open-sided chamber in which the uppermost bar fits edgewise and is longitudinally slidable, said arms being provided with slots and being reenforced and held in rigid relation by an integral substantially triangular web positioned between the outer side portions of a said arms, and wedges extending through the slots in the arms and bars for holding the bracket and bars in their operative position.

18. In a clamp of the character described, the combination of a pair of bars, the ends of which are adapted to intersect each other and are provided with slots, a one-piece bracket for holding said bars in their operative position consisting of a pair of arms, each of said arms consisting of an upper and a lower wall, one of the arms having a pair of side walls which form with its upper and lower walls an elongated chamber in which one of the bars fits and is longitudinally slidable onlyfthe other arm having but a single wall which forms with its upper and lower walls, an elongated'open-sided chamber in which the up permost bar fits edgewise and is longitudinally'slidaible, the upper and lower walls of sisting of a pair of arms extending at right angles to each other, each of said arms consisting of an upper and a lower wall, one of the arms having a pair of side walls which form with its upper and lower walls an elongated chamber in which the lowermost bar fits and is longitudinally slidable, the other arm having but a single side wall which forms with itsupper and lower walls an elongated open-sided chamber in which the uppermost bar fits edgewise and is longitudinally slid-- able, the upper and lower walls of the arms being provided with slots, and wedgesextending through the slots in the walls and bars for holding the bracket and bars in their operative position, said bracket also including a web positioned coplanar andformed integrally with the upper wall of said one arm and the lower wall of said other arm and extending therebetween.

15. In a clamp of the characterdescribed, the combination of a pair of bars, the outer ends of which overlap each other and are provided with slots, a one-piece bracket for holding said bars in their overlapped position comprising a pair of arms extending at .11

rightangles to each other, each of said arms consisting of an upper and a lower wall, one of the arms having a pair of side walls which form with its upper and lower walls an elongated chamber in which the lowermost bar fits and is longitudinally slidable, the other arm having a side wall which forms with its upper and lower walls an elongated chamber in which the uppermost bar fits and is longitudinally slidable, the inner end of the upper wall of said one arm being coplanar "with and forming a continuation of the side wall of said other arm, the upper and lower walls of the arms being provided with slots, and wedges extending through the slots in the walls and bars for holding the bracket and bars in their operative position.

16. In a clamp of the character described, the combination of a pair of bars, the ends of which overlap each other and are provided arm having but a single side wall which 5 forms with its upper andlower walls an,

elongated open-sided chamber in which the uppermost bar fits edgewise and is longitudinally slidable, the inner end of the upper ,Wall of said one arm being coplanar with and forming a continuation of said single side wall, the upper and lower walls of the arms being provided 'withvslots, and wedges e2 tending through the slots inthe walls and bars for holding the bracketand bars in their operative position. 7

17. In a clamp of the character described, the combination of a pair of bars, the ends otwhich overlap each other and are pro with its upper and lower walls an elongated chamber in which the uppermost bar fits and is longitudinally slidable, the inner end of the lower'wall of said other arm being, co,-

planar with the outer side wall of the said one arm and formmg a continuation thereof against which the'lowerrnost bar abuts,

the upper and lower walls of the arms being provided with slots andwedges extending through the slots in the walls and bars for bars in their operaholding the bracketand tive position a 18. Ina clamp of the character described, the combination of a pair of bars, the outer ends of which overlap each otherand are,

provided with slots, a one-piece bracket for holding said bars in their overlapped posi-' tion comprising a pair of arms extending at right angles to each other, each of said arms consisting of an upper and a lower wall, one of the arms having a pair of side walls which form with its upper and lower walls an elon gated chamber in which the lowermost bar fits'and is longitudinally slidable, the other arm having but a single side wall which forms with its upper and lower walls an elongated open-sided chamber in which the uppermost bar fits edgewise and is longi-j tudinally slidable, the inner end of the lower wall ofsaid other arm being ,coplanarwith the outer. side wall of the said one arm and forming a continuation thereof against which the lowermost bar, abuts, the upper and lower walls of the arms being provided with slots, and wedges extending through the slots in the walls and barsfor holding the bracket and bars in their operative posic1011., I

19. In a clamp of the character described.*

the combination of a pair of bars, the outer ends of which overlap" each other and are provided with, slots, a one piece bracket for holding said bars in their overlapped position comprising. a pair of arms adapted to be associatedwith the bars respectively and extend outwardly "from...tl1e overlapping parts toward theextremities of said endsof the bars, each of saidarins consisting of an upperandalowerwall, one of the arms having a pair of side walls which form with its upper andjlower: walls: an elongated chamher in which the lowermost bar fits and is longitudinally slidable,the other arm having a side wall which forms with its upper and 1 lower walls an elongated chamber in which the uppermost bar fitsand is longitudinally slidable, the innerend of the lower wall of said one arm being extended to form a comparatlvely long bearing surface for said lowermost bar, the upper and lower walls of v the arms being provided with slots, and wedges extending through the slots in the walls and bars for holding the bracket and bars in their operative position.

20. In a clamp of the character described, the combination of a pair .ofbars, the outer ends of which overlap eachother and are provided with slots, a one-piece bracket for holding said bars in their overlapped position comprising a pair of arms adapted to be asso-- ciated with the bars respectively and extend outwardly from the overlapping parts toward the extremities of said ends of the bars,

each of said arms consisting of an upper and a lower wall, one of the arms having a pair of side walls which form with its upper and lower walls an elongated chamber in which the lowermost bar fits and is longitudinally slidable, the other arm having but asingle side wall which forms with its upper and lower walls an elongated open-sided chamber in which the uppermost bar fits edgewise and is longitudinally slidable, the inner end of the lower wall of said one arm being eXtended and connected to the inner end of l the lower wall of said other arm to form a relatively long bearing surface for said lowermost bar, the upper and lower walls of the arms being provided with slots, and wedges extending throughcthe slots in the walls and bars for holding the bracket and bars in their operative position.

21. In a clamp of the of which overlap each other and are provided with slots, a one-piece bracket for hold: ing said bars intheir overlapped position comprising a pair of arms extending at right angles to each other, each of said arms consisting of upperand lower walls and side walls forming an elongated longitudinal chamber in which one of the bars fits and is slidable, the arms being arranged so that the chambers are disposed at differentlevels, the bracket also comprising a substantially triangular web positioned coplanar and formed;

character described, I the combination of a pair, of bars, the ends 3 mums integrally with 'the upper Wall Of onejarm, and the lower Wall of 'the other arm 'andeX- tending-therebetween, the upper and lower walls of the arms being provided with slots; and wedges extending through the slots in the walls and bars for holding the bracketa-nd bars in their operative position.

In Witness whereof, I h'ave hereunto'sig'n'ed my name.

HENRY W. 'ROOS. 

